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1. ARP Request也可以用单播。
比如arping/
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In /proc/sys/net/ipv4/neigh, there are subdirectories for each network
interface you have. In each subdirectory there are three files
(app_solicit, ucast_solicit and mcast_solicit). These files control how
many times the linux kernel will request an arp address from a userspace
application (via netlink), via a unicast arp request, and a broadcast
arp request respectively. If you set the contents of all three of these
files to zero for a particular interface, you will disable arp on that
interface.
】
2. DHCP OFFER单播和广播都可能吧。
简单说client IP已经有,属于重申请可能用单播;否则客户连IP都没有如何单播? |
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